Products made using the MicroWax cloth are as tough as they come- 100% waterproof, windproof & breathable. Since the blend is not water soluble, any incidence of water to touch it simply runs straight off. The use of a super tight weave of cotton canvas ensures that it is completely windproof. The breathability arises from the fabrics crystalline structure. which varies and aligns with an increase of body heat, thereby allowing sweat in the form of water vapour to escape.